Sawing-machine attachment.



No. 715,054. Patanted 1m. 2. 1902.

J. N. GRAHAM. SAWINE MACHINE ATTACHMENT.

(Applica. n filed Aug. 12, 1901.)

n on LA Patented on. 2. m2.

J. H. GRAHAM. SAWING MACHINE A TACHMEN-T.

(Application fllsd 12. i 1.

Z Z INVEZTOR.

ATTORNEY:

UNlTED STATES JOHN N. GRAHAM, OF

PATENT OFFICE.

FRANKLIN, INDIANA.

SAWlNG-MACHINE ATTACHMENT.

{SPECIFICATION forming part of Letters Patent No. 715,054, datedDecember 2, 1902.

Application filed August 12, 1901. Serial No. 71,763. (No model.)

To all whom it may concern.-

Be it known that 1, JOHN N. GRAHAM, of Franklin, county of Johnson, andState of Indiana, have invented a certain new and useful Sawing-MachineAttachment; and I do hereby declare that the following is a full, clear,and exact description thereof, reference being had to the accompanyingdraw ings, in which like numerals refer to like parts.

The object of this invention is to provide an attachment to a sawmill ora sawing-machine for automatically returning a board that is being sawedinto pieces or strips to the operator near the saw, and thus dispensewith the services of the man who would otherwise be needed to return theboard after each strip or piece has been sawed oil from it.

The nature of this invention will be understood from the accompanyingdrawings and the following description and claims.

In the drawings, Figure 1 is a perspective of the machine. Fig. 2 is anelevation of the right-hand end. Fig. 3 is a horizontal section througha part of the machine on the line A A of Fig. 1. Fig. 4 is anelevationof the left portion of the left end of the machine. Fig. 5 is acrosssection of a portion of the machine on the line B B of Fig. 1,parts being broken away. Fig. 6 is a plan of a portion of the top'of themachine, showing the guide for separating the sawed strips from theboard being sawed up. Fig. 7 is a bottom view of a portion of the tableat the left end, showing the means for separating and holding theguiding-beam, parts being broken away. Fig. 8 is a cross-section of aportion of the table in line with theslot through which the guide isadjustable, the table being partly broken away. Fig. 9 is a part of amodified form showing in perspective the right-hand end of the conveyorand the means thereon for preventing the board from being entirelydischarged by the conveyor.

In detail, 1 represents the table of a sawmill or sawing-machine, 2being a circular saw. There is nothing peculiar about this part of themachine, and its description will not be fully given, as the attachmentmay be made to any kind of sawing-machine.

In connection with the table of the machine I provide a slatted conveyorthe top of which is movable toward the table, said conveyor extendingbeyond the left end of said table. As here shown, the conveyor consistsof two sprocket-chains 4, with cross-slats 5 placed close together andsecured to links of the chain. The chains run on the sprocketwheels 6and 7, carried on the shaft 8, that is mounted in the posts 9 and 10 anddriven by the pulley 12, secured to said shaft. This is the mounting forthe right-hand end of the conveyor. The mounting of the left-hand end issubstantially the same, there being a pair of sprocket-wheels upon ashaft mounted in the horizontal boards 13 and 14. The board 13 issecured to the inner faces of the posts 15, 16, and 9. The board 14 isfastened to the inner face of the post 17 at the lefthand end and at theright-hand end is supported by the shaft 8, as appears in Fig. 2.

A cross-board 18 connects the two boards 13 and 14 to brace the legs 15and 17. The conveyor is driven With the top moving toward the saw, andconsequently toward the operator, who stands at the right-hand end ofthe conveyor.

The operator places a board on the table 1 in position for the saw 2 toout a lath or small strip therefrom. The lath or strip passes behind thesaw and beyond the guide 20, while the main part of the board remains onthe near side of the saw and guide 20. As the sawing continues the endof the board projects beyond the left end of the table 1 until it restsupon the rollers 21 and 22. As soon as one board is sawed and has beenpushed to the left of the saw another board is immodiately fed to thesaw, and the forward end of the second board pushes the first boardfarther to the left until the rear end of the board drops off the leftend of the table 1, as shown in Fig. 1, by the boar-i123. As soon as theend of the board 23 drops down upon the conveyor, the conveyor draws theboard to the right, and off the roller 21. Then that board lies flat onthe conveyor and is carried end wise to the operator at the right-handend of the conveyor, who takes it up and again feeds it to the saw untilthe board has been entirely sawed up as may bedesired. While sawing oneboard it may be fed through the The object of the rollers 21 and 22 isto diminish the friction with the board 23, whereby its rear end will bereadily carried off the rear support by the frictional engagementbetween the conveyer and the front end of the board after the board hasassumed the position shown in Fig. 1. Said rollers also promote thereadiness of the movement of the board from the saw by reducing thefriction of the board against its support.

The posts 15 and 16 are short and do not extend above the conveyer. Infact, the board 13 extends above said posts and the board 26 is securedto the side of board 13, so as to leave a space or guideway between therear ends for holding and adjusting the posts 27 and 28, which carry therollers 21 and 22. The posts 27 and 28 are merely boards narrow enoughto fit loosely in the guideway between the boards 13 and 26, so thatthey will have movement longitudinal of said guideway. Across the upperend of the boards 27 and 28 there is a cross outside board 29, then across inside board 30. The board 29 is secured stationary to the post2'7 and 28, as they are shown in Fig. 3; but the board 30 is independentof them and is supported by the screw-bolts 31, said board being lockedinto position by the end nuts 32. The rollers have hearings in the board30, and said board can be adjusted by loosening the bolts 31 and drivinga wedge between the boards 29 and 30 until the board 30 is pushed inwardfar enough, and then the nuts 32 are tightened.

The rollers 21 and 22 are mounted on shafts 33, which, as stated, havebearings at their outer ends in the board 30 and at their inner endsextend through a slot in the beam 35 and hearings in the board 36. Theadjustment of the board 30, which was above described, is necessitatedwhen the beam 35 is adjusted laterally, as and for the purposehereinafter explained. The board 36 is clamped tightly against the beam35 by bolt 37, which has the head 38 on one end hearing against theboard 36 and at the other end is screw-threaded and extends through theboard 29 and carries the nut 39 for clamping. By this means the rollers21 and 22 and the means for carrying their outer ends is held in placewith relation to the beam 35. To prevent the clamping-rod 37 fromclamping the ends of the rollers 21 and 22 against the adjacent parts sothey will not turn, I place The separating-boards 40 between the beam 35and board 30, the ends of the boards 40 being set in recesses in theboard 30.

The beam 35 is provided with a longitudinal slot 41, into which thenarrowed ends of said boards 40 extend loosely, said boards being,however, thicker than the width of the slot, thus providing shoulders onthe boards 40, (not shown,) that bear against the face of the beam 35.The shafts 33 of the rollers extend loosely through the slot 41, andwhen the boards 40, just described, are loosened by the nuts 39 thewhole stand, which carries the rollers 21and 22, may be pushed alongtoward or from the saw to suit various lengths of boards that may beworked upon. If the boards are short, these rollers must be placed muchnearer the end of the table 1 than as shown in Fig. 1. When the rollersare in the proper place, their supporting structure is tightenedstationary by the nut 39.

In order to make the machine complete, it is necessary also to make thebeam 35 adj ustable somewhat toward and away from the conveyer. Toaccomplish this result, said beam is mounted at its end next to thetable 1 upon a metal lip or support 43, that is secured by bolts to theunder side of the table 1 and which extends to the left somewhat fromthe table enough to furnish a ledge upon which the beam 35 may rest, asshown in Figs. 5 and 7. This metal support 43 has a lengthwise slot 68,as appears in Fig. 7, and through it the bolt 69 extends for securingthe beam. The outer end of the beam is carried upon the bracket 46,extending rearward and secured to the posts 17. It is similarly slottedlongitudinally, and through it the bolt 47 extends for securing the beam35 in place where adjusted, as appears in Fig. 4. Said beam 35 carriesthe guide-strips 20 and 50. The guide-strip 20 is a piece of metal verynarrow and about two inches high. It is secured to the beam 35 by thebolt 51. The end of the guide-strip next to the saw extends on the table1 and is held and adjusted by the bolt in the groove or recess 48, thatpermits its lateral movement.

The guide-strip 50 is pivoted at 52 in a suitable recess 53 in the beam35, so that the boards passing from the guide-strip 20 will not engagethe end of the guide-strip 50. To help deflect the board, an enlargement54 is made thereon, so that the ends of the moving boards will notengage the end of the strip 50. The strip 50, while pivoted at 52 at oneend, is laterally adjustable at the other end and held in place by a pin55, that may be placed in any one of the series of'holes 56 in the beam35. By the strip 50 the small strip of lumber cut ofi from the mainboard is deflected out of the way to the rear.

In order to throw the board 23 forward as.

it falls off the table land place it properly upon the conveyer, Iemploy a deflectingboard 60, that is hinged at 61 along its upper edgeto the bottom of the beam 35. The deflector is preferably formed ofsheet metal, as shown in Fig. 5, and preferably of two stripsoverlapping each other and clamped by the bolts 62, and they arevertically adjustable by slots 63, through which the bolts 62 extend.The deflecting-board 60 is held in proper inclination by the curvedslotted bar 64, secured to said board 60'at one end and clamped to thearm 65 by the bolt 66 through the slotted bar 64. Said arm 65 is securedto and extends down from the bottom of the beam 35.

11 is the stationary post behind what has just been described andsupports the table 1.

Another guiding or deflecting board 70 is provided under the table 1. Itis hinged to the under side of the table 1 and is not only verticallyinclined, but also is longitudinally inclined toward the conveyer as itapproaches the right-hand end of the conveyer. The other end of it isplaced to the rear of the board 60, so that it will not interfere withthe movement of the sawed board as it is moved forward along on theoonveyer. This deflecting-board 70 is formed of two parts adjustablelike the board 60, the means for vertical adjustment not appearing inthe drawings. Means are also provided for preventing the board frombeing discharged by the conveyer upon the floor. As shown in Fig. 9, butnot elsewhere, a bar or board 80 is placed crosswise at the forward endof the conveyerframe, being secured to the post 9 and the end of theboard 14. It is beyond and does not interfere with the movement of theconveyer, and the top of the board is on a lower level than the top ofthe conveyer. Consequently the board 23 while being moved bythe conveyerdoes not engage the board 80 until it has been moved over the end of theconveyer so far as to tip. I provide back from the end of the conveyeran arm 81 to engage the rear end of the board when it tips and hold theforward end of the board off the floor. The board 23 is then in aconvenient position for the operator to pick it up. The arm 81 is arectangular bar secured to the inner face of the board 14. It is notneeded particularly when the table 1 is as wide as that shown in Fig. 1,for the end of the board 23 would tip against the bottom of the tableunless the table 1 were too high. When the table 1 is too high above theconveyer or when it does not extend out far enough over the conveyer,the arm 81 is used.

The roller 22 is a little larger in diameter, and therefore its uppersurface is a little higher than the roller 21. The object of thisconstruction is to cause the board to be tipped by the higher rollerabout the time the board leaves the end of the table. In such movementthe board is pushed forward by another board being sawed immediatelyafter it, and when the forward end of the forward board strikes thesecond roller 22, which is higher than the first one, it helps toseparate the rear end of said board from the forward end of thefollowing board and to assist in tipping it.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. The combination with a sawing-machine having a suitable table, of asupport on substantially the same level as the table to receive theforward end of the board as it moves from the table, said support beingspaced from the table and behind the saw to permit the rear end of theboard to drop between it and the table, and a horizontal conveyer belowthe space between the table and said support movable toward the table toreceive the rear end of the board as it drops from the table.

2. The combination with a sawing-machine having a suitable table, of asupport to receive the forward end of the board as it moves from thetable, means for mounting said support whereby it is adjustable towardorfrom the end of the table, and a conveyor on a lower level than thetable movable toward the table and adapted to receive the rear end ofthe boards as they drop from the table.

3. The combination with a sawing-machine having a suitable table, of asupportto receive the forward end of the board as it moves from thetable, guideways in which said support is mounted whereby it may bemoved toward or away from the end of the table, means for clamping thesupport in any desired position, and a conveyer beneath the table andsaid support movable toward the table.

4. The combination with a sawing-machine having a suitable table, of aroller mounted some distance from and in line with said table to receivethe forward end of the board as it passes from the table, and a conveyeron a lower level than the table movable toward the table and adapted toreceive the rear end of the board as it drops from the table.

5. The combination with a sawing-machine having a suitable table, of aroller mounted some distance from and in line with said table to receivethe forward end of the board as it passes from the table, means formounting said roller whereby it is movable and adjustable toward andfrom the table and a conveyer on a lower level than the table movabletoward the table and adapted to receive the rear end of the board as itdrops from the table.

6. The combination with a sawing-machine having a suitable table, of apair of rollers mounted some distance from and in line with said tableto receive the forward end of the 1 board as it passes from the table,one of said rollers being farther from the table and higher than theother roller, and a conveyer on a lower level than the table movabletoward the table and adapted to receive the rear end of the board as itdrops from the table.

7. The combination with a sawing-machine having a suitable table, of apair of rollers mounted some distance from and in line with said tableto receive the forward end of the board as it passes from the table, oneof said ceive the rear end of the board as it drops from the table.

8. The combination with a sawing-machine having a suitable table, of aconveyer on a lower level than the table movable toward the table andadapted to receive the boards from the table, a vertically-inclinedboard along the side of said conveyer for deflecting the boards as theycome from the table upon said conveyer, means for hinging saiddeflectingboard at its edge, means for altering the angle of theinclination of the deflecting-board and holding it in its alteredposition, and means for adjusting the width of the deflectingboard.

9. The combination with a sawing-machine having a suitable table, of aconveyer on a lower level than the table movable toward the table andadapted to receive the boards from the table, a stationary beam orextension beyond and in line with the end of the table and to one sideof the conveyer a vertically-inclined deflecting-board hinged at itsupper edge to said beam or extension, means for adjusting theinclination of said deflectingboard, and another deflecting-boardsecured beneath the table inclined vertically and also longitudinallytoward the discharge end of the conveyer.

10. The combination withasawing-machine having a suitable table, of aconveyer on a lower level than the table movable toward the table andadapted to receive the boards as they pass from the table, and astationary horizontal bar at the discharge end of the conveyer on alower level than the top of the conveyer upon which the board may tip.

11. The combination with asawing-machine having a suitable table, of aconveyor on a lower level than the table movable toward the table andadapted to receive'the boards as they pass from the table, a stationaryhorizontal bar at the discharge end of the conveyer upon which the boardmay tip, and means for engaging the upper end of the board when it tipson said bar.

In witness whereof I have hereunto affixed my signature in the presenceof the witnesses herein named.

JOHN N. GRAHAM.

Witnesses;

O. A. COVERT, G. W. NEAL.

